Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06V
IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
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10/00
Arrangements for image or video recognition or understanding
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G06V10/40
Extraction of image or video features
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G06V10/44
Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
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G06V10/443
by matching or filtering
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